I ve tried the series K thanks to a friend and I have sold all my amps to power m bought 2 because this amp is for now little known except in a park that used them with the JBL Vertec line array (which normally uses the crown but it does jug too low and not enough faithful) evidence that the K series will do very badly. I ve also test the K 10 6000watt within 2 ohm per cots. They are monstrous whether holding power or quality, the series features a K lcd with dsp.